Datasheet

Document Reference No.: FT_000051

UM232R USB - Serial UART Development Module

Datasheet Version 1.1

Clearance No.: FTDI# 125

v) For 3.3V power controlled circuits the FT232R‟s VCCIO pin must not be powered down with the

external circuitry (the PWREN# signal gets its VCC supply from VCCIO). Either connects the power

switch between the output of the 3.3V regulator and the external 3.3V logic or power VCCIO from the

3V3OUT pin of the FT232R.